Amending method of mounting positions of cable clips of suspension bridge

Abstract

The invention discloses an amending method of the mounting positions of rope clips of a suspension bridge. The amending method comprises the following steps of firstly, according to actually-measuredpre-deviator of a cable saddle and the coordinates of a lowest point of middle spans of free cables, determining the stress-free length of a main cable; then according to an actually-measured permanent loading capacity, amending hanging rod force; then according to the actual stress-free length of the main cable and the amended hanging rod force, determining the bridge forming line shape of the main cable, the bridge forming position of each rope clip and the stress-free length of every main cable rope section (between every two adjacent rope clips); and finally calculating the horizontal length of each rope section and the mounting position of each rope clip under a free cable condition. Through the adoption of the amending method disclosed by the invention, according to the actually-measured line shape of the free cable and the permanent loading and weighting result, the mounting position of each rope clip under the free cable condition can be amended, so that under the bridge forming condition, the accuracy of the position of each rope clip and the accuracy of the tilt angle of a hanging rod are guaranteed.

Description

technical field [0001] The invention belongs to the field of bridge construction monitoring and relates to a complete set of method for correcting the installation position of cable clamps of suspension bridges, and is especially suitable for correcting the installation position of cable clamps according to the actual measured empty cable shape and the actual measured dead load weight. Background technique [0002] The spanning capacity of the suspension bridge is the best among common bridge types. With the continuous improvement of bridge design and construction level, the span records of suspension bridges are constantly being refreshed, such as the completed Akashi Kaikyo Bridge in Japan (main span 1991m) and Xihoumen Bridge in China (main span 1665m), as well as the under construction in Mexico City, Italy. Take the Strait Bridge (main span 3300m) and China's Yangsigang Yangtze River Bridge (main span 1700m). Suspension bridge is composed of main cable, suspender, brid...

AI Technical Summary

Problems solved by technology

[0005] On the other hand, due to the needs of the construction schedule, the manufacturing and processing of the main beam and railings generally have not started when the main cable strands are manufactured and processed, so the calculation of the stress-free length of the main cable strands and the empty cable installation position of the cable Theoretical value of dead load

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